As many of you may know, Halloween is a very big deal here at Small Dog Electronics. Every year we hold a company-wide costume contest where employees dress up and customers vote to select the winner. Even the dogs get in on the action! Check out the flickr gallery from last year here, and stay tuned to our blog for this year’s costumes, along with a poll for you to vote for your favorite.

If you still need a costume this year, we’ve highlighted a few of our favorite geeky costumes below.

I’d also like to announce a change to the TopTen.plist. Through the holiday season, we are condensing the list to a Top 5, starting this week. Hopefully this will enable a more concise version of each week’s theme. Thanks for reading, and without further ado: The Top 5 Geeky Halloween Costumes. (Click titles to view images.)

5. The Cat5 Ethernet Cable:

Though every Mac is wireless these days, Gigabit Ethernet is still king when it comes to reliability and transfer speeds. Originally featured on Engadget, this costume pays homage to perhaps the greatest network cable ever.

4. The iPhone 4:

iPhone costumes are nothing new. Since the device’s inception in 2007, an increasing number of Apple fans roam the streets dressed as Apple’s iconic piece of hardware each year. John Savio has taken the concept to the extreme with this costume however. Centered around a 75 pound LED LCD panel, Savio’s costume utilizes the video out capabilities of the iPhone 4 to create a working wearable iPhone 10 times the size of the actual device. via Cult of Mac

3. 8-Bit Girl:

This creative costume might not look like much from a distance, but upon closer inspection is an accurate emulation of the pixelated images of a by-gone era. Originally featured on Gizmodo around this time last year, this costume is a particular favorite in the marketing department.

2. The iPhone Dog:

This costume is part optical illusion and part geeky tribute to the 1st generation iPhone. This Apple fan designed this costume for their dog, incorporating an actual image of the pet on the phone’s screen to create an interesting effect.

1. iWear

Featured on Scoopertino yesterday, this faux-costume is essentially how Apple would release and package Steve Jobs’ unofficial “uniform.” Boasting the tagline “Think different, dress alike,” items in the line include a pair of Levi’s 501s, St. Croix mock turtleneck, New Balance 991s, and non prescription glasses. Though it would be hilarious were it real, plenty of Apple fans have taken matters into their own hands dressing as Jobs in years past.